Your Mozilla crash

And you are not able to run again mozilla without a reboot.

• You may remove this file:

rm /home/usrs/.mozilla/default/jxxx.slt/XUL.mfasl

• The crash could be unrelated to Mozilla itself but from other problems:

• In case the name of your computer "hostname" is changing while X is open then it could make X instable. This is related with dhcp and network restart.
• A file could be corrupted. You can check by

  strace -f mozilla

  and

  rpm -Va

  (check the integrity of all the files). In a particular case it was GConf who was corrupted and make mozilla to crash.